100 kV / 0.5 focus X-ray tube structure
By optimizing the glass tube structure and cathode groove design of the X-ray tube, the problem of uneven focal focusing was solved, achieving high-resolution imaging.
Patent Information
- Application Number
- CN202520490647.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-20
AI Technical Summary
The existing 100kV/0.5 focal length X-ray tube suffers from uneven focal length focusing due to structural size issues, which affects the imaging effect.
A novel X-ray tube structure was designed, including a glass tube of a specific size and a cathode groove. The anode target has an inclination of 5°, and the filament is installed inside the cathode groove with its end higher than the bottom of the groove to ensure uniform focal spot focusing.
This achieves uniform focusing of the focal spot, improves the tolerance, and ensures imaging quality.
Smart Images
Figure CN223898292U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of X-ray tube technology, and in particular to a 100kV / 0.5 focal point X-ray tube structure. Background Technology
[0002] An X-ray tube is a device used to generate X-rays. Its structure mainly consists of a cathode and an anode. The cathode is the electron emission source of the X-ray tube and is usually made of tungsten wire or other high-melting-point metals. During operation, the cathode is heated to a high temperature, thereby emitting electrons. The anode is the target material of the X-ray tube and is usually made of heavy metals such as tungsten or molybdenum. When electrons strike the anode, X-rays are produced.
[0003] 100kV / 0.5mm focal length X-ray tubes are primarily used for high-resolution imaging and the detection of small objects. These X-ray tubes operate at 100kV and have a focal length of 0.5mm, making them suitable for applications requiring high-resolution imaging. However, existing 100kV / 0.5mm focal length X-ray tubes often suffer from uneven focusing due to their structural dimensions, affecting their performance in actual use. Utility Model Content
[0004] To solve the above problems, this utility model provides an X-ray tube structure with 100kV / 0.5 focal point.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a 100kV / 0.5 focal point X-ray tube structure, comprising a glass tube, wherein a cathode and an anode are disposed inside the glass tube, the glass tube includes a large-diameter section disposed in the middle, and small-diameter sections are symmetrically disposed at both ends of the large-diameter section, the large-diameter section and the small-diameter section are connected by a transition section, the diameter of the large-diameter section is 45mm, the diameter of the small-diameter section is 41.5mm, the length of the glass tube is 136-142mm, the distance from the center of the anode target of the anode to the anode end of the glass tube is 72.8-73.2mm, and the inclination of the anode target of the anode is 5°.
[0006] Furthermore, the cathode includes a cathode head with a diameter of 21.95-22 mm. A cathode groove is formed in the middle of the cathode head, with a groove opening diameter of 8.98-9.02 mm and a groove depth of 4.5-4.55 mm. An installation groove is formed inward from the middle of the bottom of the cathode groove, with an opening diameter of 1.3-1.35 mm and a groove depth of 3 mm. A filament is installed in the installation groove.
[0007] Furthermore, after the filament is assembled, the height of its end is 0.23-0.27 mm higher than the bottom of the cathode groove.
[0008] In summary, the present invention has the following beneficial effects: In this application, by designing the structure and size parameters of the glass tube and the size parameters of the cathode groove, the focal spot is focused evenly, with a high tolerance, thus ensuring the performance. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0010] Figure 2 This is a schematic diagram of the overall structure of the cathode head according to an embodiment of the present invention;
[0011] Figure 3 This is a schematic diagram simulating the focus of an embodiment of the present utility model;
[0012] Figure 4 This is a schematic diagram of the actual focal size of an embodiment of this utility model.
[0013] In the diagram: 1. Glass tube; 11. Large diameter section; 12. Small diameter section; 13. Variable diameter section; 2. Cathode; 21. Cathode head; 22. Cathode groove; 23. Mounting groove; 24. Filament; 3. Anode; 31. Anode target. Detailed Implementation
[0014] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0015] like Figure 1-4 As shown in the figure, this application discloses a 100kV / 0.5 focal point X-ray tube structure, including a glass tube 1, with a cathode 2 and an anode 3 disposed inside the glass tube 1. The glass tube 1 includes a large-diameter section 11 disposed in the middle, with small-diameter sections 12 symmetrically disposed at both ends of the large-diameter section 11. The large-diameter section 11 and the small-diameter section 12 are connected by a transition section 13. The diameter of the large-diameter section 11 is 45mm, the diameter of the small-diameter section 12 is 41.5mm, and the length of the glass tube 1 is 136-142mm.
[0016] The anode 3 is provided with an anode target 31, which is located inside the large diameter section 11 of the glass tube 1. The distance from the center of the anode target 31 to the anode end of the glass tube 1 is 72.8-73.2 mm, and the inclination of the anode target 31 is 5°.
[0017] The cathode 2 includes a cathode head 21 with a diameter of 21.95-22 mm and a length of 12 mm. A cathode groove 22 is formed in the middle of the cathode head 21, with an opening diameter of 8.98-9.02 mm and a groove depth of 4.5-4.55 mm. An installation groove 23 is formed inward from the center of the bottom of the cathode groove 22, with an opening diameter of 1.3-1.35 mm and a groove depth of 3 mm. A filament 24 is installed in the installation groove 23. After assembly, the height of the end of the filament 24 is 0.23-0.27 mm higher than the bottom of the cathode groove 2.
[0018] By designing the structure and dimensions of glass tube 1, as well as the dimensions of cathode groove 22 and the assembly parameters of filament 24, uniform focal spot focusing and high tolerance are achieved, ensuring optimal performance. The actual focal spot size produced by the above scheme is 0.67*0.61mm, meeting the requirement of a 0.5mm focal spot.
[0019] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A 100kV / 0.5 focal point X-ray tube structure, comprising a glass tube (1), wherein a cathode (2) and an anode (3) are disposed within the glass tube (1), characterized in that: The glass tube (1) includes a large-diameter section (11) in the middle, and small-diameter sections (12) are symmetrically arranged at both ends of the large-diameter section (11). The large-diameter section (11) and the small-diameter section (12) are connected by a transition section (13). The diameter of the large-diameter section (11) is 45 mm, the diameter of the small-diameter section (12) is 41.5 mm, the length of the glass tube (1) is 136-142 mm, the distance from the center of the anode target (31) of the anode (3) to the anode end of the glass tube (1) is 72.8-73.2 mm, and the inclination of the anode target (31) of the anode (3) is 5°.
2. The X-ray tube structure with a 100kV / 0.5 focal spot according to claim 1, characterized in that: The cathode (2) includes a cathode head (21) with a diameter of 21.95-22 mm. A cathode groove (22) is provided in the middle of the cathode head (21). The diameter of the groove opening of the cathode groove (22) is 8.98-9.02 mm and the groove depth is 4.5-4.55 mm. An installation groove (23) is provided inward from the middle of the bottom of the cathode groove (22). The diameter of the groove opening of the installation groove (23) is 1.3-1.35 mm and the groove depth is 3 mm. A filament (24) is installed in the installation groove (23).
3. The X-ray tube structure with a 100kV / 0.5 focal spot according to claim 2, characterized in that: After assembly, the height of the end of the filament (24) is 0.23-0.27 mm higher than the bottom of the cathode groove (22).